Hi guys n gals a few observations that I made the past few times out that drove me in circles until I pegged it.
Scenario 1 I have a Howa 1500 .243 win lightweight rifle and was doing load development got some really good loads then decided to shoot some steel. Next day I’m zeroing off a different pack and groups are 1-1.5 MOA I can’t figure out what changed. Well my pack I shot off to zero had “ears” for the forearm and my hunting pack does not.
I can only figure that the very light rifle was moving around when I was shooting it due to recoil while the bullet was still in the bore. I put my hand on the scope and presto .3 MOA groups again.
Scenario 2. 12.5 lb 28 Nosler. I am getting vertical stringing in an up and left way. I wasn’t paying much mind to my shoulder pressure more reticle and trigger. Well light shoulder pressure = high and left and hard hold or firm = low and right prone with bipod and bag. I try something and do two groups one with light bipod loading and one with firm shoulder pressure and trigger hand pressure. Firm pressure grouped low and .1 right light pressure grouped nearly .3 miles higher and left as well as was larger in size.
Moral of the story as far as I believe? Light guns for caliber need some pressure to tame the dwell time recoil (bullet moving through bore) to shoot accurately. My buddy has a 6.5 creed braked at 12lbs and his does not respond the same as mine.
Scenario 1 I have a Howa 1500 .243 win lightweight rifle and was doing load development got some really good loads then decided to shoot some steel. Next day I’m zeroing off a different pack and groups are 1-1.5 MOA I can’t figure out what changed. Well my pack I shot off to zero had “ears” for the forearm and my hunting pack does not.
I can only figure that the very light rifle was moving around when I was shooting it due to recoil while the bullet was still in the bore. I put my hand on the scope and presto .3 MOA groups again.
Scenario 2. 12.5 lb 28 Nosler. I am getting vertical stringing in an up and left way. I wasn’t paying much mind to my shoulder pressure more reticle and trigger. Well light shoulder pressure = high and left and hard hold or firm = low and right prone with bipod and bag. I try something and do two groups one with light bipod loading and one with firm shoulder pressure and trigger hand pressure. Firm pressure grouped low and .1 right light pressure grouped nearly .3 miles higher and left as well as was larger in size.
Moral of the story as far as I believe? Light guns for caliber need some pressure to tame the dwell time recoil (bullet moving through bore) to shoot accurately. My buddy has a 6.5 creed braked at 12lbs and his does not respond the same as mine.